dynamic-content-personalizer

Bind each personalization token to a real export column and assign a fallback that reads naturally when the field is empty, such as {{first_name | "there"}} rendering as "Hi there,". A tag with no fallback is treated as a failure because it produces broken renders like "Hi ,".

Write if/elseif/else rules keyed to named segments from your segment map, for example champions get the loyalty offer and at-risk get the win-back offer. Every block must end in a catch-all else so subscribers matching no branch still receive valid content.

It walks the entire template as if every personalized field were empty and every subscriber fell to the else branch, confirming no orphaned punctuation, empty bullets, or dead conditional blocks render. Each tag and block is listed with its worst-case render.

Full names, email addresses, phone numbers, precise addresses, order IDs, and special-category data should be blocked from body copy and subject lines. First name, city, and product category are typically acceptable, and sensitive fields should be replaced with coarser substitutes.

Do not use it to build segments, write the base subject or body copy, or score email quality; those belong to list-segment-builder, email-creative-builder, and email-quality-auditor respectively. It only wires personalization onto existing copy for existing segments.